If the point (5, 6) lies on the graph of the equation 4x + 5y = b, the find the value of b.

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Solution

The correct option is A 50
Given,
The value of x = 5
The value of y = 6
Now, putting them in the equation
4x + 5y = b, we get
$\Rightarrow$ 4 x (5) + 5 x (6) = b
$\Rightarrow$ 20 + 30 = b
$\Rightarrow$ 50 = b
$∴$ The value of b is 50

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